Improved compound for stuffing leather



To all whom it may concernpound for stufiing leather.

JOSHUA MERRILL, OF BOSTON,- MASSACHUSETTS.

Letters Patent No. 100,652, dated March 8, 1870.

IMPROVED COMPOUND TOR STUPIING- LEATHER.

The Schedule referred to in these Letters Patent and making part of the same Be it known that I, JOSHUA M RRILL, of the cityoiBostou, in theconnty of Suffolk, and State of Massachusetts, have invented anew and useful Compound for Stufiing Leather; and -I do hereby declare that the following is a full and correct description thereof.

My invention consists in a new stuffing compound,

. composed ofsolid'paralfiue mixed with tallow,fish-oil, IOSlll, lOSlIl-Oll, and tar of commerce, or either of them.

Pa-rafiine, havm g no tendency to absorb oxygen, acts as an antiseptic, preventing the oxidation of such sub stances as those above mentioned, and like substances,

thereby preventing them from drying or hardening in v the pores ot'the leather. v

By solid paratfine, I mean either the article known inthe market asscale parafiine, or that known as refined parafiine.

A compound composed of thirty-three parts paraffine, thirty-three parts rosin, twenty-four parts rosinoil, and ten parts rendered tallow, makes a stnt fing or.

dressing for leather of great value, finishing goat and sheep-skins so that they resemble calf-skins. It renders them very soft and pliable, and they finish with a beautiful surface; V y

This compound also fipishes calf-skins equalto the best French calf, and at comparatively small cost,'as

compared with the high-priced oils, usually employed for dressing the finer kinds. ofleather. v v I A composition of thirty-three parts paratline, thirtythree parts rosin, fourteen parts rosin-oil,vtenparts North Carolina tar ortar of commerce, and ten parts 1 of tallowor fish-oil, also makes a very valuable com- In manufacturing my paratfine st-ufiing compound,

I use a' kettle heated by fire directly applied, or by steam heat, (by means'ofa double-walled kettle,) such as usually employed in melting glue, into which I first put the pamfline, then the rosin-oil and tallow or fishoil, with the tar, when used, and heat them until'thorou'ghly melted and heated to about 220 Fahrenheit.

substantial] y as specified.

I now add rosin of good quality in small-amounts,

constantly stirring until I add the whole quantity to be used, and continue the heat and stirring till all is melted. v

I then allowit 'to rest until it is clear and bright, when it is ready to be put in packages for use, it' the operation has been properly conducted.

The paralfine stufiing compound thus made will be I clear and bright, and when rubbed between the tingers will be soft and unctuons like a very thick fatty matter. Whencold, it is of the consistencyof very solid fatty matter, and is removed from the package.

by scrapin git.

I am aware that solid fats, like'tallow or tallow and tar of commerce, also rosin-oil mixed with rosin, have been used for'stuffing leather, the mixture of tar and rosin and rosin-oil giving greater consistency to the tallow, and such combinations answer a good purpose,

but are apt to become hard in time, and make the leather to which they are applied dry and stiff, whereas, the parafiine compound Inse cau'ses the leather to remain soft and pliable for a long time.

I do not wish to confine myself to the exact proportions of paraffine, rosin; rosin-oil,.tar, and tallow, or fish-oil above given, for I find I can vary the proportions considerably, with good results. I

In some casesl use as much as fiftyparts rosin,but

. I find that a less'proportiou than twenty-five per cent,

by weight, of paratfine is not so reliable and valuable vasa stnffing 'COlllIJOlllltL'itS it loses whensmixed less than twenty-five per cent, its antiseptic power in a considerable degree. I clainrthe parafline stnffing compou'ud for stuffing leather, composed of solid parafline mixed with rosinoil, tallow, or fish-oil,- and rosin or. tar of commerce,

JOS UA MERRILL.

'Witnesses:

CHAS. H. PLIMPTON, I DAVID DUXLAP. 

